The Appeal to pity reference article from the English Wikipedia on 24-Apr-2004
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Appeal to pity

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An appeal to pity (also called argumentum ad misericordiam) is a logical fallacy in which someone tries to win support for their argument or idea by exploiting their opponent's feelings of pity or guilt.

Examples:

As with all logical fallacies, these ideas aren't necessarily bad; they just aren't good for the reason stated.